Truck rack



FIG. 1 is an environmental perspective view of a truck rack showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view, with the right side being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines showing of the truck in FIG. 1 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a truck rack, as shown and described. 